baber/WOPTO huggingface dataset:
Patent GB-329059-A (GB)
Title: Improvements in or relating to taps, cocks or valves
IPC: F16K3/04
Filed: 1929-02-28
Abstract: 329,059. Burch, C. R., Hancroft, F. E., Sykes, C., and Associated Electrical Industries, Ltd. Feb. 28, 1929. Combined rotary disc or conical and liquid seal valves. -In valves or cocks of the type consisting of two members having a sliding engagement with one another, a port or ports in one member being covered and uncovered by the other member, lubricating or sealing grooves or channels are provided in one or other member completely surrounding the port or ports in said member so that when the valve or cock is shut no port in the other member is opposite a part of the surface of the first member enclosed by said grooves or channels and in at least one position of the tap the grooves or channels are connected with a space external to the tap by a channel or channels in the other member. Fig. 5 shows the invention as applied to a plug type valve in which a channel 46 in the plug surrounds the port 43 in the plug and has branches 47, 48, the branch 48 communicating with a circumferential groove 49 in the plug and the branch 47 communicating, in the closed position of the valve, with a groove 50 in the casing, said groove 50 communicating with a reservoir 54 containing lubricating or sealing liquid. Thus in the closed position of the tap, when lubricant flows into the chanels 46, 47, 49 no port in the casing is opposite a part of the plug face enclosed by said channels. Two rotary disc valve arrangements are described, in one of which the operating handle can be detained in its adjusted position by a spring-pressed sliding bolt in the casing co-operating with recesses in the under sideof the handle; the inlet and outlet tubes are provided with bends to catch any leakage of oil or sealing fluid from the tap. The other form of disc valve is provided with a gutter in the outlet pipe for catching leakage of sealing liquid.
Patent GB-907600-A (GB)
Title: Improvements relating to studs for use in welded structures
IPC: B23K35/02
Filed: 1961-02-23
Abstract: 907,600. Heat insulation. MARSDEN, A. Feb. 23, 1961, No. 6684/61. Class 64 (2). [Also in Groups XXII and XXV] Refractory cement &c. coverings are secured to metal surfaces by studs 4 welded to the surfaces and embedded in the coverings. A stainless-steel mesh may be welded to the stud, the head of which may be of corrosion- or heat-resisting alloy, e.g. stainless steel. Specification 886,918 is referred to.
Patent GB-205428-A (GB)
Title: Improvements in or relating to wire ropes
IPC: D07B1/08
Filed: 1923-03-08
Abstract: 205,428. Dodd, F. W. March 8, 1923. Strands of special section, wire ropes with.- One or more layers of a rope are formed of wire strands A, A<1>, Fig. 2, having inner and outer rib members joined by a, web, the wires having a permanent set which lengthens the outer rib relatively to the inner one. The ribs are constituted by two circular portions a, a', the circles being of different diameters and being either contiguous or spaced a slight distance apart. The web a<2> connecting the ribs has its surface formed of circular arcs of radii corresponding to the circles forming the ribs, so that on one side the outer rib of the adjacent strand beds into the web and on the opposite side the inner rib of the adjacent strand beds therein. Either or both ribs may be formed with lips a<3>, a<4>, Fig. 3. By passing the wire through a die or between rolls, either during or before laying into the rope, the outer rib is lengthened, thereby giving the wire a permanent set either equal to or slightly greater than that normally produced on laying the wire into the rope.
Patent GB-302091-A (GB)
Title: Improvements in or relating to self-adjusting grabs
IPC: B66C3/12
Filed: 1928-03-05
Abstract: 302,091. Reichmann H. March 5, 1928. Grab-buckets.-In a grab for taking up scrap iron, ore, &c. having a number of grabbing arms C pivoted on a lower block B and opened and closed by links D connected to an upper block A. the lower block is free to tilt, when any one jaw encounters a resistance about the pivot at which that jaw is attached to it, and the opposite jaw is thus able to complete the closing movement. The links D may be flexible so as to yield laterally and permit the jaws to turn out of their normal plane of movement, and all the pivots of the grab have a lateral play in their bearings greater than the usual tolerance. The links D may be built up of two or more flexible strips spaced apart by distance pieces, ribs c<1> on the grab arms passing between them. Specification 286,706 is referred to.
Patent GB-566304-A (GB)
Title: Improved ventilator cowl
IPC: F23L17/02
Filed: 1943-05-01
Abstract: 566,304. Ventilator cowls. SMITH, D. R. May 1, 1943, No. 6913. '[Class 25] Cowls of the elbow shape type, such as are used for the ventilation of ships, have the greater and upper part of their rear surface 1 or 6 constituted as a "ruled" surface or surfaces, i.e. formed with straight generating lines so that such part may be shaped by the process of cold bending of a plate. The greater and upper parts of the side surfaces 2 are of substantially plane form. The mouth of the cowl is trapezoidal or rectangular. The front surface at 9 is also "ruled." The lower portions of the sides and back terminate in conical portions 5 and a cylindrical part 7.
Patent GB-1279383-A (GB)
Title: Improvements in or relating to component inserting machines
IPC: H05K13/04
Filed: 1970-02-13
Abstract: 1279383 Feeding articles one at a time USM CORP 13 Feb 1970 [14 Feb 1969] 6931/70 Heading B8S In a component feeding device comprising a carriage 20, Figs. 3, 5, which supports components C in separate rows, means are provided for moving the carriage so that a selected row of components is brought into alignment with a delivery station. The latter is a shoot 90, Fig. 3, and to release the bottom component C the penultimate component is held by a pin 112 which when it is projected by a ram 114 automatically withdraws a spring-loaded pin 34 supporting the bottom component by means of a pivoted lever 116. The carriage is moved by a motor 42, Fig. 7, which constantly drives shafts 58<SP>1</SP>, 64. The latter are selectively coupled to a pinion 44 which meshes with a rack 48 on the carriage to drive the carriage in forward or reverse directions. Movement of the carriage may be controlled either manually or by a programme. The carriage is accurately locked in position by a plunger 40, Fig. 5, operated by a ram 102. The components are supported in holders 30 which are readily replaceable when empty. Specification 1,249,739 is referred to.
Patent GB-727396-A (GB)
Title: Improvements in or relating to mixtures containing common salt intended for household purposes, and processes for producing same
IPC: A23L27/40
Filed: 1951-03-22
Abstract: A non-caking, fluorinated common salt, useful particularly in preventing dental caries, is made by adding to salt a water-soluble complex fluoride, e.g. magnesium silicofluoride, sodium silicofluoride or sodium monofluorophosphate, to the extent that the salt contains 0.01-1 mg. of fluorine per gram. Specification 727,454 is referred to.
Patent GB-872128-A (GB)
Title: Improvements in or relating to pulsed current generating circuit arrangements
IPC: H03K3/30
Filed: 1960-02-29
Abstract: 872,128. Transistor pulse circuits. TELEFUNKEN G.m.b.H. Feb. 29, 1960 [March 4, 1959], No. 7004/60. Class 40(6) A constant current pulse generator comprises a pair of transistors 9, 12 in series with a common inductor 14, transistor 12 being normally conductive and transistor 9 normally non-conductive so that no current flows through the load 10 until a pulse is received from a blocking oscillator 1 which cuts off transistor 12 and drives transistor 9 into conduction. The constant current through the inductor 14 is thus switched through the load 10 for the duration of the pulse. In the system described, the load 10 takes the form of an input wire of a magnetic storage matrix. The monostable blocking oscillator 1 is normally cut off until a negative pulse is received at terminal Ur, when transistor 1 becomes conductive for a period dependent on the characteristics of transformer 2. At the onset of the pulse from the blocking oscillator 1, transistor 12 is cut off by a pulse from the tertiary winding of transformer 2 and transistor 9 is rendered conductive via capacitor 8. The constant current through inductor 14 is thus switched through the magnetic store winding 10 and remains constant until the end of the blocking oscillator pulse when the circuit 9, 12 is restored to its normal state. The biasing circuit for transistor 1 comprising elements 3, 4, 5, 6 may be replaced by a positive feed to the base.
Patent GB-803802-A (GB)
Title: Improvements in and relating to electrical circuits
IPC: G11C19/12
Filed: 1956-03-06
Abstract: 803,802. Parametrically - excited resonators. KOKUSAI DENSHIN DENW A CO., Ltd. March 6, 1956 [March 12, 1955 (2)], No. 7067/56. Class 40 (9). In a cascade arrangement of parametricallyexcited resonators which are successively excited by a frequency 2 f in the order of the stages of the cascade and produce a subharmonic output frequency f the phase 0 or # of which is determined by a pilot signal comprising the subharmonic output of the preceding stage, means are provided for preventing the subharmonic output produced by an excited resonator from acting in the direction opposite to the order of the cascade stages. The principle of " parametrically - excited resonators " which may comprise saturable inductors L1, L2, Fig. 1A, tuned to frequency f by a condenser C and damped by a resistor R, is described in Specification 778,883. The excitation frequency 2 f is applied to terminals 1, 2, and the subharmonic pilot signal determining the phase of the subharmonic output f is effective at terminals 3, 4. The resonator is represented symbolically in Fig. 1B, the excitation circuit being omitted. As shown in Figs. 2B and 3, the resonator stages I, II, III are excited by frequency 2f in turn and are arranged in successive groups of three. The excitation periods are arranged to overlap so that two stages are excited simultaneously for a short period during which the output of one stage is effective over a coupling impedance r as the pilot signal of the next stage. In this arrangement an antiphase signal from a transformer T acts by way of an impedance rn over a group of resonators to neutralize the output OP from stage I proceeding in the wrong direction. In a modification, Fig. 4, matching transformers T1, T2, T3 are used to couple the resonator stages, transformer T2 including an additional winding to which the antiphase neutralizing signal is applied. The neutralizing signal may be derived from an additional winding on transformer T1, as shown in Fig. 5. The arrangement may be applied to cascade circuits which include a number of branches, Fig. 6 (not shown). In an alternative arrangement, the subharmonic output is prevented from acting in the wrong direction by associating a hybrid coil with each resonator, as shown in Fig. 7A. The pilot signal IP from the preceding resonator stage is applied to coils c1, c1<SP>1</SP> on ferrite cores l1, l2 which have coils c3, c3<SP>1</SP> respectively connected to a resonator P and a balanced load BL: The subharmonic output OP from resonator P is obtained in the circuit comprising coils c2, c2<SP>1</SP>. An alternative hybrid arrangement is shown in Fig. 7B. It is stated that the cascade arrangement may form logical " not " or " and " circuits.
Patent GB-211016-A (GB)
Title: Improvements in contacts for electric knife switches
IPC: H01H1/42
Filed: 1923-03-12
Abstract: 211,016. Gibbons, W. J. March 12, 1923. Contacts for knife switches comprise oppositely disposed contact portions each of which is formed with a hook for engaging the opposite contact portion from the outside, so as to tend to prevent separation of the contact portions. The invention is also applicable to bent-over contacts of the type shown in Figs. 1 and 4 and to contacts of the type shown in Fig. 7. In the former case, the hooks may be bent out from the outer side portions 3 of the contacts, Fig. 1, or from the inner contacting surfaces 18, 19, Fig. 4. In the latter case, Fig. 7, the side portions 32, 33 are partly cut away at their base and bent inwardly to form hooks 39, 40 which extend through slots in the opposite portions.
Patent GB-538695-A (GB)
Title: Improvements in or relating to timing controllers for electric circuits
IPC: H03K17/288
Filed: 1940-04-22
Abstract: 538,695. Electromagnetic switches; switching systems. IGRANIC ELECTRIC CO., Ltd. April 22, 1940, No. 7234. Convention date, May 16, 1939. [Class 38 (v)] [Also in Group XXXV] A circuit such as a welding circuit is closed for a pre-determined adjustable time by sending a current impulse through the winding 15 of an electromagnetic switch, the armature 16 of which moves so as to bring contacts 2 into engagement with fixed contacts 1; the momentum of the armature carries it further while a spring 11 is strained, the spring then expands again and armature and contacts 2 move again as a unit to break the circuit. The contacts 2 are carried on an equalizing bar 5 pivoted to a member 7 pivoted at 8 to an arm 9 on the shaft carrying the armature and the spring 11 normally causes the arm 7 to engage a stop to hold armature and contacts against relative rotation. The spring 11 may be adjusted to vary the time during which the contacts are closed. The impulse to the electromagnet 15 is produced by operation of a switch 24 which causes a condenser 23 to discharge through the magnet and a valve 26 at a particular point of the A.C. cycle determined by the condition of the grid 26b. Specifications 462,505, 504,020, [Group XXXV], and 530,298 are referred to.
Patent GB-646187-A (GB)
Title: Transparent metal fabricating lubricant
IPC: C10M135/06
Filed: 1948-03-09
Abstract: An alkyl ester of abietic acid or partly hydrogenated abietic acid is sulphurized by heating with sulphur and an oil-soluble metal petroleum sulphonate.  Esters of di- or tetrahydroabietic acid may be used and the alkyl group of the ester is preferably methyl, ethyl or propyl.  The metal salt of the sulphonate may be an alkali or alkaline earth metal, zinc or aluminium salt, and is preferably the sodium salt of mahogany sulphonic acids. Temperatures of 250-400 DEG F. are used and the reaction mixture is quenched after the reaction. The quenching may be performed by addition of a cold mineral oil, or a vegetable or animal oil, or a heat exchanger may be used.  The Specification as open to inspection under Sect. 91 comprises also the statement that oil-soluble metal sulphonates in general may be employed.  This subject-matter does not appear in the Specification as accepted.ALSO:The product obtained by heating an alkyl ester of abietic acid or partly hydrogenated abietic acid with sulphur in presence of an oil-soluble metal salt of a petroleum sulphonate is blended with 75-99 per cent mineral oil to give a metal fabricating lubricating oil.  Animal oils, e.g. lard, and vegetable oils may be used to replace part or all of the mineral oil.  The metal salt may be an alkali metal, alkaline earth metal, zinc or aluminium salt, and the alkyl esters are preferably lower alkyl.  The quantity of sulphur added may be from 0.5-20 per cent.  The Specification as open to inspection under Sect 91 comprises also the statement that oil-soluble metal sulphonates in general may be used.  This subject-matter does not appear in the Specification as accepted.
Patent GB-526004-A (GB)
Title: Improvements in aircraft
IPC: B64D31/10
Filed: 1939-03-06
Abstract: 526,004. Aircraft control indicators. BLACKBURN AIRCRAFT, Ltd., and HILL, H. E. March 6, 1939, No. 7247. [Class 4] For multi - engined aircraft a switch is closed to give a warning signal only when all the throttle controls are moved towards the closed throttle position, the arrangement being such that on failure of one or more of the engines, a smaller movement of the throttlecontrol rods of the operating engines is required to sound the alarm than is the case when all the engines are working. The invention is described in its application to aircraft having two, three, and four engines. For a four-engined aircraft, the throttle controls are adapted, when moved towards the closed throttle positions, to raise four rods 30 pivoted in pairs to arms 28 in turn pivoted to a yoke 18. The yoke is pivoted at 16 to the plunger 15 of a switch mounted in a casing 11. When some of the rods 30 are raised, for example when the corresponding engines are out of action, a lesser movement of the remaining rod or rods is necessary to close the switch to operate a buzzer or other signal to warn the pilot to lower the retracted undercarriage.
Patent GB-403840-A (GB)
Title: Improvements in sensitising silver halide emulsions
IPC: G03C1/16
Filed: 1933-03-10
Abstract: Silver halide emulsions are sensitized by incorporating a selenopseudocyanine containing in the benzselenazole nucleus an amino group substituted by the acyl radical of a fatty acid containing more than two and less than six carbon atoms.  As suitable fatty acids propionic acid and butyric acid are mentioned.  In examples (1) 6-propionylamino-2-methyl-benzselenazole methiodide and 2-iodo-6-methyl-quinoline ethiodide are dissolved in boiling alcohol and an alcoholic solution of sodium ethylate is added; the dye 1-methyl-1<1>-ethyl-5 - propionylamino - 6<1> - methylseleno - pseudocyanine iodide crystallizes out on cooling, (2), 6 - butyrylamino - 2 - methylbenzselenazole methiodide is used in place of the propionylamino compound, the dye 1-methyl-1<1>-ethyl - 5 - butyrylamino - 6<1> - methyl - seleno-pseudocyanine iodide being formed.  The 6-propionylamino - and 6 - butyrylamino - 2 - methylbenzselenazole methiodides are made by the action of propionic or butyric anhydride on 2-methyl - 6 - aminobenzselenazole and conversion into the quaternary salt by means of methyl iodide; 2-methyl -6 -amino--benzselenazole is formed by nitrating 2-methyl-benzselenazole and reducing the product with stannous chloride and hydrochloric acid or iron powder and acetic acid.  The Specification as open to inspection under Sect. 91 describes also selenopseudocyanine dyes, containing an unsubstituted amino group, as sensitizers.  In an example 1-methyl-1<1>-ethyl - 5 - aminoselenopseudocyanine iodide is prepared by boiling 6-amino-2-methyl-benzselenazole with 2-iodoquinoline ethiodide in alcohol and adding an alcoholic solution of sodium ethylate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-734443-A (GB)
Title: Improvements in or relating to glass compositions and glass-to-metal seals
IPC: C03C3/118
Filed: 1953-03-17
Abstract: 734,443. Glass. GENERAL ELECTRIC CO., Ltd., OLDFIELD, L. F., and PARTRIDGE, J. H. March 8,1954 [March 17, 1953], No. 7366/53. Class 56. Glasses suitable for sealing directly to such metals as molybdenum or to Fe-Ni-Co alloys comprise, in percentage parts by weight, SiO 2  64-68; Al 2 O 3  3.5-6; B 2 O 3  12-16.5; Na 2 O 3-5; K 2 O 2-5; [Na 2 O+K 2 O=6-8] ; BaO 2.5-3.5; CaO 0-1.5; ZnO 0-2.5; PbO 0-7 [the total of these four oxides being 4-8] and fluorine 0.2-2.
Patent GB-352518-A (GB)
Title: Improvements in radio instrument for determining elevation
IPC: G01S13/46
Filed: 1930-03-06
Abstract: 352,518. Indicating proximity of earth or other bodies. EATON, W. S., 3323, Hollydale Drive, Los Angeles, U.S.A. March 6, 1930, No. 7380. Convention date, March 16, 1929. [Class 37.] Apparatus for determining the distance of an object from a wave-reflecting surface comprises an angularly adjustable directional radio transmitter, directional receiving means, and an indicator associated with the latter showing the angle of reflection between a radio wave emitted from the transmitter and the reflecting surface. The apparatus is shown arranged on an aeroplane 11, Fig. 1, for determining its altitude. A directional transmitting antenna 12 is adjusted by means of a handwheel 14, or a motor, so that the transmitted waves are reflected from the earth's surface G and received on a directional receiving antenna A. This consists of three separate loop antennµ 15a, 16a, 17a which are connected through a commutator 20, Fig. 2, to tuning and amplifying means 21 as described in Specification 350,461, [Group XL]. The antennµ 15a, 16a, 17a are respectively connected to pairs of field coils 25, 26 ; 23, 24; and 27, 28. A rotor M carrying a pointer W is thereby moved into a position depending upon which of the coils 15a, 16a, 17a receives the strongest signal. The transmitting antenna 12 is adjusted until the strongest signal is received on the antenna 16a, the elevation then being read on a dial rotating with the antenna 12. Automatic means for indicating the elevation are shown in Fig. 3. The pointer W is mounted on a shaft 31 and is in the position shown when the maximum signal is received on the antenna 16a. Deviation from this position causes an arm 32 carrying contacts 33, 34 to engage one of two pairs of contacts 35, 36 forming a reversing- switch for a motor 37b which rotates the transmitting antenna 12 until the maximum signal is again received on the antenna 16a. A scale 30 is also driven by the motor 37b, and indicates, in conjunction with a pointer P, the altitude of the aircraft. The invention is also applicable for determining the distance of a cliff, or the depth of water below a ship.
Patent GB-825815-A (GB)
Title: Improvements in or relating to shovel buckets for material handling machines
IPC: E02F9/28
Filed: 1958-03-07
Abstract: 825,815. Earth-excavating machines. EIMCO CORPORATION. March 7, 1958 [March 21, 1957], No. 7403/58. Class 68(1) On the transverse digging lip 32 of a shovel bucket of an overthrow shovel are spaced forwardly and downwardly projecting digging teeth 40. The lip is depressed to a shallow arcuate formation that is forwardly bowed. The teeth, preferably two, are laterally off-set from the depressed middle porton of the lip so that the tips of the teeth lie in substantially transverse alignment with the foremost portion of the lip, well below the lip and within the overall transverse dimensions of the bucket.
Patent GB-802889-A (GB)
Title: Improvements in or relating to silos
Inventor: WILLETT WILFRED KENNETH
IPC: B65D88/74
Filed: 1956-03-12
Abstract: 802,889. Grain-silos. ELLIOTT & SONS (READING), Ltd., S. Feb. 21, 1957 [March 12, 1956], No. 7628/56. Class 20(1) A grain-silo is composed of a plurality of courses of sections 1, each course consisting of a ring of sections, and each section comprises a pair of uprights 2 held in spaced relation by louvres 3, the uprights being arranged radially of the ring so that the side-faces of adjacent uprights fit together, the top ends of each pair of uprights (except in the top course) supporting a shoe 8 which acts as a socket for the lower ends of the uprights forming the course above. The shoes each comprise metal plates 10, 11, secured to a horizontal plate in H-formation and joined along their vertical edges by inclined plates 12. The outer plate 11 of each shoe has a hook 14 to support a cable 6 encircling the ring and tightened by a strainer 7. Wooden sills 4 are included in the lowest course which is surrounded by a metal vermin-guard (not shown). One of the sections of the lowest course includes an emptying trap for the removal of grain. The louvres are inclined at 45 degrees to the horizontal.